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Username Post: 1986 Chevy G van windshield
1983G20Van 
Super Senior Member
Posts: 3888

Loc: Bedford, Texas, USA
Reg: 11-13-02
06-09-21 08:36 PM - Post#2821424    
    In response to GLHS60

I have both an 83 and an 87 G20 that both had urethane only from GM. BOTH leaked. Glass guy uses the rubber gasketed style as a replacement. So far neither have leaked. I think the switch to urethane was around the 1980 model year on Vans.
1983 G20 Van, 350 TPI, Ported 906 Vortecs, Edelbrock 3817 Base, ASM oversize runners. Reed Custom Roller cam, 700r4, 12 bolt with 3.08 gears, Doug Thorley Tri-Y headers, true duals


Edited by 1983G20Van on 06-09-21 08:37 PM. Reason for edit: No reason given.
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